SUPERCOMM 2002 Booth #32316, Hall A3

WESTFORD, Mass., May 28, 2002 - At the SUPERCOMM 2002 show next week, Sonus Networks (Nasdaq: SONS) will highlight technology trends in packet voice infrastructure and related services through participation in several conference presentations, as well as live demonstrations of packet-based voice solutions and services. The SUPERCOMM 2002 conference will be held June 2-6 at the Georgia World Congress Center in Atlanta, Georgia, with the exhibitions open June 4-6.

Packet voice experts from Sonus will be participating in the following sessions:

Monday, June 3, 9:30 am - 5:00 pm
Session TF3 - Fundamentals of Wireless
Speaker: Wesley Hicks, office of the CTO

Monday, June 3, 3:00 pm - 4:30 pm
Industry Update - M14C - Migrating Interactive Communications to IP Networks
Speaker: Hassan Ahmed, president and CEO

Tuesday, June 4, 9:00 am - 10:30 am
EntNet 2002 session - Enterprise Security: Will the Next-Generation Applications Really Be Secure?
Panel Chair: Wesley Hicks, office of the CTO

Tuesday, June 4, 9:00 am to 10:30 am
Session T05A - New Solutions for Cost-Effective and Differentiated Voice over DSL Service
Speaker: Mike Hluchyj, founder and CTO

Tuesday, June 4, 10:45 am - 12:15 pm
Session T23B - New Architectures to Power Convergence
Speaker: Mike Hluchyj, founder and CTO

Tuesday, June 4, 10:45 am to 12:15 pm
Session T24B - VoIP Network Signaling and Protocols
Speaker: Bob Dye, director of strategic marketing

Wednesday, June 5, 2:15 pm - 3:45 pm
Session W71F - Migration Strategies to IP Technology: Business Issues
Speaker: Bob Dye, director of strategic marketing

Wednesday, June 5, 2:15 pm - 3:45 pm
Session W78F - Softswitches: Case Studies and Lessons Learned
Speaker: Tracy Venters, director of product management

SUPERCOMM is the premier annual communications and information technology exhibition and conference. Additional information on SUPERCOMM 2002 can be found at http://www.supercomm2002.com.

About Sonus Networks

Sonus Networks, Inc., is a leading provider of packet voice infrastructure products for the new public network. With its Open Services Architecture (OSA), Sonus delivers end-to-end solutions addressing a full range of carrier applications, including trunking, residential access and Centrex, tandem switching, and IP voice termination, as well as enhanced services. Sonus' award-winning voice infrastructure solutions, including media gateways, softswitches and network management systems, are deployed in service provider networks worldwide. Sonus, founded in 1997, is headquartered in Westford, Massachusetts. Additional information on Sonus is available at http://www.sonusnet.com.

Open Services Architecture is a trademark of Sonus Networks. All other company and product names may be trademarks of the respective companies with which they are associated.